<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>体验css</title>
		<style type="text/css">
			/* 
	           在css当中如何去寻找一个html标签，我们称之为选择器
			 */
			p{
				height: 200px;
				width: 200px;
				background-color: chartreuse;
			}
			.headline{
				background-color: cyan;
			}
			#a9528{
				height: 6.25rem;
				width: 100px;
				color: #00FFFF;
			}
		</style>
	</head>
	<body>
		<!-- 表单介绍 -->
		<p>I am a p!</p>
		<h2 class="headline">hello, I am a h2</h2>
		<p >I am also a p</p>
		<li id="a9528">hello</li>
	</body>
</html>
